Took my son there for lunch today. His office is just nearby.
This place is the real deal...... but then that's what I was told on this board. I had a milanesa torta and some Horchata. The torta was the best I've ever had.... thin, breaded beef, shredded cabbage (I think), tomato, onion, a light mayonnaise-y sauce and a slab of white cheese (manchego?). My son had a combo of EL Pastor (BBQ), served with rice , beans, tortillas, and the rest of the usuals. All very, very good. The Horchata was the thickest, cinnamony-est I've had.
Most of the items are on a steam tray.... but everything looked very fresh. There was a selection of 8 or so fruit drinks that all looked great. It took a bit of asking, but we figured out that you order, then pay when your number is called, and the drinks are given to you on the honor system. They ask if you paid.... you say yes, and get the drinks.
El Campeon can be a little daunting if you speak no Spanish at all. Some of the counter staff is not good with English, but we know enough words to get by. This place is well worth any minor discomfort though.
Going back again, to try other things. Hopefully, someone will post the must-trys again as my home page search didn't come up with anything, though I know I've seen them here before.
El Campeon is at the corner or Del Obispo and Camino Camino Capistrano. I hope I'm spelling itright, because I just couldn't find any specifics on the web.